Research Article

Fully Biobased Aliphatic Anionic Oligoesters: Synthesis and Properties

Figure 7

The MALDI-TOF MS spectrum of PBDA70Ss30. corresponds to linear species oligomer containing hydroxyl end groups with and fatty acid and sulfonated repeating units. corresponds to cyclic species oligomer with and fatty acid and sulfonated repeating units. corresponds to linear species oligomer containing ester end groups with and fatty acid and sulfonated repeating units. corresponds to linear species containing acid end groups with and fatty acid and sulfonated repeating units.